WARDHAUGH, R. (2000). An introduction to sociolinguistics (Ed.3.). Blackwell.
芝加哥风格引文WARDHAUGH, Ronald. An Introduction to Sociolinguistics. Ed.3. Oxford: Blackwell, 2000.
MLA引文WARDHAUGH, Ronald. An Introduction to Sociolinguistics. Ed.3. Blackwell, 2000.
警告：这些引文格式不一定是100％准确.